Originally Posted by
SaphCos4x4_Dan
Thanks Steve much appreciated
Would a 138.3 head be scrap or still useable if it was freshly skimmed to this thickness?
The minimum thickness is 138.x MM (can't remember the last figure), if you head over to the "Tech essay" room, there is a article by Stu, as to why this is.
The reason is when they are skimmed below this, you start loosing material around the valve seats.
Martin